A nurse in the ICU is caring for a client who has heart failure and is receiving a dobutamine drip. The nurse should identify that which of the following findings indicates that the medication is effective?
Increased urine output
Decreased blood glucose level
Decreased blood pressure
Increased heart rate
The Correct Answer is A
Choice A Reason: Dobutamine is a positive inotropic agent that increases the contractility of the heart and improves cardiac output. This leads to increased renal perfusion and urine output, which reduces the fluid overload and edema associated with heart failure. Therefore, this choice is correct.
Choice B Reason: Dobutamine does not have a direct effect on blood glucose level. It may cause hyperglycemia as a side effect, but this is not an indication of its effectiveness. Therefore, this choice is incorrect.
Choice C Reason: Dobutamine may cause a slight decrease in blood pressure due to vasodilation, but this is not its main therapeutic effect. A significant decrease in blood pressure may indicate hypovolemia, hypotension, or shock, which are adverse effects of dobutamine. Therefore, this choice is incorrect.
Choice D Reason: Dobutamine also has a positive chronotropic effect, which means it increases the heart rate. However, this is not a desired outcome for a client with heart failure, as it increases the oxygen demand of the heart and may worsen the condition. Therefore, this choice is incorrect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason: Urine output is not a finding that should decrease with adequate fluid replacement. On the contrary, urine output should increase as the fluid therapy restores the renal perfusion and function. The nurse should monitor the urine output and ensure that it is at least 0.5 mL/kg/hr for adults and 1 mL/kg/hr for children.
Choice B Reason: Heart rate is a finding that should decrease with adequate fluid replacement. A high heart rate is a sign of hypovolemia, which occurs when the burn injury causes fluid loss from the intravascular space. The nurse should monitor the heart rate and expect it to decrease as the fluid therapy replenishes the blood volume and improves the cardiac output.
Choice C Reason: Weight is not a finding that should decrease with adequate fluid replacement. On the contrary, weight may increase as the fluid therapy restores the hydration status and corrects the fluid deficit. The nurse should monitor the weight and compare it with the pre-burn weight to evaluate the fluid balance.
Choice D Reason: Blood pressure is not a finding that should decrease with adequate fluid replacement. On the contrary, blood pressure may increase as the fluid therapy restores the vascular tone and improves the tissue perfusion. The nurse should monitor the blood pressure and expect it to increase as the fluid therapy compensates for the fluid loss.
Correct Answer is A
Explanation
Choice A Reason: This is correct because respiratory acidosis is characterized by a low pH and a high PaCO2, indicating that the client has impaired ventilation and excess carbon dioxide in the blood.
Choice B Reason: This is incorrect because respiratory alkalosis is characterized by a high pH and a low PaCO2, indicating that the client has increased ventilation and reduced carbon dioxide in the blood.
Choice C Reason: This is incorrect because metabolic acidosis is characterized by a low pH and a low HCO3, indicating that the client has an excess of metabolic acids or a loss of base in the blood.
Choice D Reason: This is incorrect because metabolic alkalosis is characterized by a high pH and a high HCO3, indicating that the client has an excess of base or a loss of metabolic acids in the blood.
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